mysqlÂýÈÕÖ¾ÎÊÌâ
hi,
ÔÚÅäÖÃÎļþÖÐÅäÖÃÁËÂýÈÕÖ¾£¬µ«Êǵ½Ä¿±êÎļþ¼Ðϲ鿴ȴûÓУ¬ÇëÎÊÄÄÀï³öÎÊÌâÁË
1.ÅäÖÃÎļþ
log-slow-queries="D:/mysql/slowlog"
long_query_time=0.01
log-queries-not-using-indexes
2.²éѯ½á¹û
| 5 | 10 | 2009-09-22 15:29:25 |
| 8 | 3 | 2009-09-21 14:30:06 |
| 10 | 2232 | 2009-09-22 14:27:21 |
| 11 | 2123 | 2009-09-22 14:27:25 |
| 12 | 34 | 2009-09-22 14:27:32 |
+------+------+---------------------+
19290 rows in set (0.08 sec)
SET global log_output=file
ÄãµÄ long_query_time ÉèÖÃÓ¦¸ÃÊDz»¶ÔµÄ¡£
¼ì²éÒ»ÏÂÄãµÄÒÔÏÂÐÅÏ¢¡£
SQL code:
mysql> show variables like 'long_query_time';
+-----------------+-----------+
| Variable_name | Value |
+-----------------+-----------+
| long_query_time | 10.000000 |
+-----------------+-----------+
1 row in set (0.06 sec)
mysql> show variables like '%slow%';
+---------------------+-------+
| Variable_name | Value |
+---------------------+-------+
| log_slow_queries | ON |
| slow_launch_time | 2 |
| slow_query_log | ON |
| slow_query_log_file | |
+---------------------+-------+
4 rows in set (0.00 sec)
mysql> show va
Ïà¹ØÎÊ´ð£º
Ò»¸öÐÐÒµÍøÕ¾£¬ÒªÊµÏֵŦÄÜÒªÇóΪ£º
Ò»ËÑË÷±íµ¥¿ÉÑ¡ËÑË÷ ²úÆ·/×ÊѶ/É̼ң¬ËÑË÷ʱϣÍûÏÈËѱêÌâºóÈ«ÎÄ£¬µ±Ç°µÄÊý¾ÝÁ¿¹À¼Æ3Íò¶à£¬¶¨Î»ÆÚÍûÔÚ°ÙÍò¼¶Ò²¿ÉÓá£
Êý¾ÝÀàÐÍΪinnodb£¬µ±Ç°µÄ·½·¨ÊǶԹؼü´Ê½øÐÐ ......
Winform+MySQL×öÏîÄ¿£¬ÔÚ×¢ÖØÐÔÄܵÄÇé¿öÏ£¬ÎÒ¸ÃÈçºÎÈ¥Íê³ÉÕâÀàÐ͵ÄÏîÄ¿ÄØ£¡
Çë¸÷λ¸øÒÔÌáʾ¡£
ÄãÕâ¸ö·¶Î§Ì«¹ãÁË£¬ÎÒ˵2µãÖØÒªµÄ°É
1.WINFORM³ÌÐòÊǵ¥¶ÀÔËÐеÄCS³ÌÐò£¬ºÍBS²»Í¬£¬BSµÄѹÁ¦Ê¼ÖÕ¶¼ÔÚSERVERÉϵ쬶ÔC ......
ÿ´Îinsert database Ö®ºó¶¼Òªµ½MysqlÏ¿´¿´ÓÐûÓвåÈë³É¹¦£¬ºÜ²»·½±ã¡£
ÇëÎÊÄÄλ֪µÀÈçºÎÔÚgalileo EclipseÏÂÉèÖòÅÄÜÏÔʾMysqlµÄÊý¾Ý¿âÄÚÈÝ£¿
»¹ÊÇÓòéѯÓï¾ä°É ¿ÉÒÔÓÃprintln¿´¿´Äã¸Õ²åÈëµÄÓï¾ä
°²×°Êý¾Ý¿ ......
Ï뽫mysqlÒ»¸öÊý¾Ý¿âÉϵÄһЩ±íÓ³Éäµ½Äڴ棬ÒÔÌá¸ß·ÃÎÊËÙ¶È¡£¶øÇÒÕâЩ±í»áÓвåÈ롢ɾ³ýºÍ¸üеIJÙ×÷¡£
ÔÚmysqlÉÏÔõô×ö£¿ÄÜ·ñ¾ßÌå˵Ã÷Ôõô×ö£¿
mysql ĬÈϾÍÊÇ´ÓÄÚ´æÖжÁÈ¡±íÊý¾Ý½øÐвÙ×÷µÄ°¡
ÓÅ»¯²é ......
ÎÒµÄÎÊÌâÊÇÕâÑùµÄ£º
ÔÚÊý¾Ý¿âÖÐÓÐÁ½ÕÅ±í£ºtable A,table B,
table A ÖÐÓÐ×Ö¶Î_ID,channelID,_createdBy,_status
table B ÖÐÓÐ×Ö¶Î_ID,userName,_status
AÖеÄ_createdByÊÇBÖÐ_ID,BÖеÄ_IDºÍuser ......